Though I guess it could have been taken both ways...I'm almost certain he meant that the number of wards would be doubled, counting the new wards that had just been added at the time.

The off chance that they double the space in existing wards....well. This COULD happen...because I know for sure that on the east side of the Lavender Beds, there are two bridges that lead to a closed gate. I wonder what will be beyond those gates one day.